16gb Sandisk Flash Drive - Theater not workin

Hello!

After I read what is behind the Halo 4 Disc, they said I can either use a 320 Hardrive or a 8gbflash drive but its not working out? I got a 16gb and 12.9gb reserved but now its 9.2gb but its not working? I want to see the replay in theater but I cant even know its 9.2gb.
Plese help me out!

a HARD DRIVE is required mate.

but they said a 8gb flashdrive OR a hard drive is required. Halo Reach required a hard drive but a Halo 4 needed either FlashDrive or Hard Drive